<template>
  <Common :sidebar="false">
    <div class="categories-wrapper">
      <!-- 分类集合 -->
      <ModuleTransition>
        <ul v-show="recoShowModule" class="category-wrapper">
          <li class="category-item" :class="title == item.name ? 'active': ''" v-for="(item, index) in this.$categories.list" :key="index">
            <router-link :to="item.path">
              <span class="category-name">{{ item.name }}</span>
              <span class="post-num" :style="{ 'backgroundColor': getOneColor() }">{{ item.pages.length }}</span>
            </router-link>
          </li>
        </ul>
      </ModuleTransition>

      <!-- 博客列表 -->
      <ModuleTransition delay="0.08">
        <note-abstract v-show="recoShowModule" class="list" :data="posts" :currentPage="currentPage" @currentTag="getCurrentTag"></note-abstract>
      </ModuleTransition>

      <!-- 分页 -->
      <ModuleTransition delay="0.16">
        <pagation class="pagation" :total="posts.length" :currentPage="currentPage" @getCurrentPage="getCurrentPage"></pagation>
      </ModuleTransition>
    </div>
  </Common>
</template>

<script>
import Common from '@theme/components/Common'
import NoteAbstract from '@theme/components/NoteAbstract'
// 动画效果
import ModuleTransition from '@theme/components/ModuleTransition'
import pagination from '@theme/mixins/pagination'
import { sortPostsByStickyAndDate, filterPosts } from '@theme/helpers/postData'
import { getOneColor } from '@theme/helpers/other'
import moduleTransitonMixin from '@theme/mixins/moduleTransiton'

export default {
  mixins: [pagination, moduleTransitonMixin],
  components: { Common, NoteAbstract, ModuleTransition },

  data () {
    return {
      currentPage: 1
    }
  },

  computed: {
    // 时间降序后的博客列表
    posts () {
      let posts = this.$currentCategories.pages
      posts = filterPosts(posts)
      sortPostsByStickyAndDate(posts)
      return posts
    },
    // 标题只显示分类名称
    title () {
      return this.$currentCategories.key
    }
  },

  mounted () {
    this._setPage(this._getStoragePage())
  },

  methods: {
    // 获取当前tag
    getCurrentTag (tag) {
      this.$emit('currentTag', tag)
    },
    // 获取当前页码
    getCurrentPage (page) {
      this._setPage(page)
      setTimeout(() => {
        window.scrollTo(0, 0)
      }, 100)
    },
    _setPage (page) {
      this.currentPage = page
      this.$page.currentPage = page
      this._setStoragePage(page)
    },
    getOneColor
  },

  watch: {
    $route () {
      this._setPage(this._getStoragePage())
    }
  }
}
</script>

<style src="../styles/theme.styl" lang="stylus"></style>

<style lang="stylus" scoped>
@require '../styles/mode.styl';

.categories-wrapper {
  max-width: $contentWidth;
  margin: 0 auto;
  padding: 4.6rem 2.5rem 0;

  .category-wrapper {
    list-style: none;
    padding-left: 0;

    .category-item {
      vertical-align: middle;
      margin: 4px 8px 10px;
      display: inline-block;
      cursor: pointer;
      border-radius: $borderRadius;
      font-size: 13px;
      box-shadow: var(--box-shadow);
      transition: all 0.5s;
      background-color: var(--background-color);

      &:hover, &.active {
        background: $accentColor;

        a span.category-name {
          color: #fff;

          .post-num {
            color: $accentColor;
          }
        }
      }

      a {
        display: flex;
        box-sizing: border-box;
        width: 100%;
        height: 100%;
        padding: 8px 14px;
        justify-content: space-between;
        align-items: center;
        color: #666;

        .post-num {
          margin-left: 4px;
          width: 1.2rem;
          height: 1.2rem;
          text-align: center;
          line-height: 1.2rem;
          border-radius: $borderRadius;
          font-size: 0.7rem;
          color: #fff;
        }
      }
    }
  }
}

@media (max-width: $MQMobile) {
  .categories-wrapper {
    padding: 4.6rem 1rem 0;
  }

  .page-edit {
    .edit-link {
      margin-bottom: 0.5rem;
    }

    .last-updated {
      font-size: 0.8em;
      float: none;
      text-align: left;
    }
  }
}
</style>
